1st: I think it was probably made in the late 60s or early 70s. It was about a diamond thief trying to steal some "special/one of a kind" diamond. I do remember there was a boat chase at the end of the movie and the thief got away.

2nd: Also probably made in the late 60s or early 70s. It was about a guy that kidnaps a girl and keeps her locked up way out in the woods. Later he kidnapps her mother too. He keeps them both in a cabin out in the middle of no where. Not sure about it, but it seems like the motehr and daughter fall in love with the kidnapper?

I don't remember all the details about these 2 movies. I just remember I like them.